paver install question

Hello, I have started this install, and have a question. I am installing borgert strassen series pavers. I am doing the 007 kit, which is three sizes.

My question is what sort of pattern if any do I have to follow? I started laying the pattern that I found on their website, but am wondering what you all do when you have three sizes to lay and a large area to cover, (400 square ft. patio.) I wanted a truly random look, and now that I have this pattern, it looks somewhat generic if you will.